DE102009039224A1 - Method for recognizing blocked bore-hole in metallic component i.e. vane of high pressure turbo engine in gas turbine system, involves recognizing continuous borehole based on temperature change in bore-hole - Google Patents
Method for recognizing blocked bore-hole in metallic component i.e. vane of high pressure turbo engine in gas turbine system, involves recognizing continuous borehole based on temperature change in bore-hole Download PDFInfo
- Publication number
- DE102009039224A1 DE102009039224A1 DE102009039224A DE102009039224A DE102009039224A1 DE 102009039224 A1 DE102009039224 A1 DE 102009039224A1 DE 102009039224 A DE102009039224 A DE 102009039224A DE 102009039224 A DE102009039224 A DE 102009039224A DE 102009039224 A1 DE102009039224 A1 DE 102009039224A1
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- Prior art keywords
- bore
- hole
- compressed air
- component
- holes
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Links
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000011161 development Methods 0.000 claims abstract description 4
- 238000001931 thermography Methods 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 4
- 238000011156 evaluation Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 description 14
- 238000012360 testing method Methods 0.000 description 10
- 239000000428 dust Substances 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/002—Thermal testing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/005—Repairing methods or devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/80—Diagnostics
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Erkennung von verstopften Bohrungen in einem Bauteil, insbesondere in einer Schaufel einer Turbomaschine. Die Erfindung betrifft ferner eine Vorrichtung zur Durchführung eines solchen Verfahrens.The invention relates to a method for detecting clogged holes in a component, in particular in a blade of a turbomachine. The invention further relates to a device for carrying out such a method.
Für einen sicheren Betrieb einer Turbomaschine ist eine ausreichende und zuverlässige Kühlung der Turbinenschaufeln, die einer hohen Belastung ausgesetzt sind, von wesentlicher Bedeutung. Die Turbinenschaufeln weisen deshalb eine Vielzahl an Kühlkanälen oder Kühlkanäle bildende Hohlräume auf, die im Folgenden der Einfachheit halber allgemein als Bohrungen bezeichnet werden. Während des Betriebs der Turbomaschine werden die Bohrungen von Kühlluft durchströmt, wobei sicherzustellen ist, dass die Kühlluft ungehindert durch die Bohrungen strömen kann.For safe operation of a turbomachine, sufficient and reliable cooling of the turbine blades, which are subjected to a high load, is essential. Therefore, the turbine blades have a plurality of cooling channels or cooling channels forming cavities, which are referred to in the following for the sake of simplicity generally as holes. During operation of the turbomachine, the holes are flowed through by cooling air, it being ensured that the cooling air can flow unhindered through the holes.
Aus der
Die
Doch auch bei Einsatz solcher präventiven Maßnahmen können Verstopfungen nicht ausgeschlossen werden. Deshalb ist es wichtig, vor der Inbetriebnahme und bei der Wartung einer Turbomaschine Verstopfungen in den Bohrungen der Turbinenschaufeln zu erkennen und möglicherweise zu lokalisieren, um diese – soweit möglich – zu beseitigen.But even with the use of such preventive measures, blockages can not be ruled out. Therefore, it is important to detect and possibly locate blockages in the turbine blade holes prior to commissioning and maintenance of a turbomachinery, to eliminate them as much as possible.
Aus der
In dem Vortrag
Ein ähnliches Verfahren wurde bereits in der
Aufgabe der Erfindung ist es, ein kostengünstiges Verfahren und eine Vorrichtung zur Durchführung des Verfahrens anzugeben, mit dem bzw. mit der verstopfte Bohrungen in einem Bauteil, insbesondere in einer Schaufel einer Turbomaschine, zuverlässig erkannt werden können.The object of the invention is to provide a cost-effective method and an apparatus for carrying out the method, with which or with the clogged holes in a component, in particular in a blade of a turbomachine, can be reliably detected.
Gelöst wird diese Aufgabe durch ein Verfahren mit den Merkmalen des Anspruchs 1 und durch eine Vorrichtung mit den Merkmalen des Anspruchs 6. Vorteilhafte und zweckmäßige Ausgestaltungen des erfindungsgemäßen Verfahrens bzw. der erfindungsgemäßen Vorrichtung sind Gegenstand der Unteransprüche.This object is achieved by a method having the features of claim 1 and by a device having the features of claim 6. Advantageous and expedient embodiments of the method according to the invention and of the device according to the invention are the subject matter of the subclaims.
Das erfindungsgemäße Verfahren zur Erkennung von verstopften Bohrungen in einem Bauteil, insbesondere in einer Schaufel einer Turbomaschine, umfasst folgende Schritte:
- – Durchströmen der Bohrungen des Bauteils mit Pressluft;
- – Erfassen der Wärmeentwicklung in den Bohrungen und/oder Bohrumgebungen während oder nach dem Durchströmen; und
- – Erkennen der durchgängigen Bohrungen anhand einer Temperaturänderung in den Bohrungen und/oder Bohrumgebungen.
- - Flow through the bores of the component with compressed air;
- - Detecting the evolution of heat in the holes and / or drilling environments during or after flowing through; and
- - Recognition of the continuous holes on the basis of a temperature change in the holes and / or Bohrumgebungen.
Die Erfindung beruht auf der Erkenntnis, dass die Beobachtung besonderer physikalischer, genauer gesagt thermodynamischer Effekte für die Kontrolle der Durchgängigkeit von Bohrungen genutzt werden kann. Unmittelbar nach Beginn des Durchströmens erwärmt sich nämlich eine Bohrungsumgebung durch die Kompression der Luft und kühlt danach aufgrund der Expansionskälte der Pressluft wieder ab. Diese charakteristischen Wärmeentwicklungen deuten auf eine durchgängige Bohrung hin; bei einer verstopften Bohrung sind die Erwärmungs- und Abkühlungseffekte nicht zu beobachten, oder sie sind zumindest weniger stark ausgeprägt.The invention is based on the recognition that the observation of particular physical, more precisely thermodynamic effects can be used for controlling the continuity of boreholes. Namely, immediately after the start of the flow, a bore environment heats up by the compression of the air and then cools down again due to the expansion of the compressed air. These characteristic heat developments indicate a continuous bore; in a clogged hole, the heating and cooling effects are not observed, or they are at least less pronounced.
Das erfindungsgemäße Verfahren hat den Vorteil, dass Wanddicken und Bohrungspositionen kaum noch eine Rolle spielen, da direkte physikalische Effekte gemessen werden, die an der Bohrung stattfinden. Bei Einsatz geeigneter Technik ermöglicht das erfindungsgemäße Verfahren eine schnelle, vollautomatische und auch kostengünstige Prüfung von Kühlluftbohrungen, insbesondere im Vergleich zu einer derzeit praktizierten manuellen Wasserdurchflussprüfung. Ein weiterer Vorteil gegenüber der zuvor erwähnten Heißluftprüfung besteht darin, dass kein Aggregat zur Lufterwärmung notwendig ist.The method according to the invention has the advantage that wall thicknesses and bore positions hardly play a role, since direct physical effects that occur at the bore are measured. When using a suitable technique, the method according to the invention enables a fast, fully automatic and also cost-effective testing of cooling-air bores, in particular in comparison with a currently practiced manual water-flow test. Another advantage over the aforementioned hot air test is that no unit for air heating is necessary.
Gegenstand der Erfindung ist auch eine Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens mit einer Pressluftzufuhr zur Bereitstellung von nicht-erwähnter oder temperierter Pressluft. Mit einer auf das Bauteil gerichteten Wärmebildkamera können die zuvor beschriebenen Effekte beobachtet und anschließend einer Auswertung zugeführt werden.The invention also provides an apparatus for carrying out the method according to the invention with a compressed air supply for the provision of non-mentioned or tempered compressed air. With a directed onto the component thermal imaging camera, the effects described above can be observed and then fed to an evaluation.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung und aus der beigefügten Zeichnung, auf die Bezug genommen wird. In der Zeichnung zeigt die einzige Figur schematisch den Aufbau einer erfindungsgemäßen Vorrichtung zur Erkennung von verstopften Bohrungen in einem Bauteil.Further features and advantages of the invention will become apparent from the following description and from the accompanying drawings, to which reference is made. In the drawing, the single figure shows schematically the structure of a device according to the invention for detecting clogged holes in a component.
Die in der Figur dargestellte Vorrichtung umfasst einen Prüfstand
Der Prüfstand
An den Rechner
Die Steuereinheit für das Pressluftventil
Im Folgenden wird die Durchführung des erfindungsgemäßen Verfahrens beschrieben.In the following, the implementation of the method according to the invention will be described.
Das Bauteil
Der gesamte Vorgang wird mittels der Wärmebildkamera
Das Bauteil
Die oben beschriebenen Verfahrensschritte zur Erkennung von verstopften Bohrungen und die anschließende Auswertung werden vollautomatisch durchgeführt.The process steps described above for the detection of clogged holes and the subsequent evaluation are carried out fully automatically.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 1010
- Prüfstandtest bench
- 1212
- Bauteilcomponent
- 1414
- PressluftzufuhrCompressed air supply
- 1616
- PressluftventilPneumatic valve
- 1818
- Rechnercomputer
- 2020
- WärmebildkameraThermal camera
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 10248410 A1 [0003] DE 10248410 A1 [0003]
- DE 10252189 A1 [0004] DE 10252189 A1 [0004]
- DE 10064269 A1 [0006] DE 10064269 A1 [0006]
- US 4644162 [0008] US 4644162 [0008]
Zitierte Nicht-PatentliteraturCited non-patent literature
- ”Automatisiertes System zur thermographischen Prüfung von Gasturbinenschaufeln” von J. Zettner et al. anlässlich der DGZfP-Jahrestagung 2003 [0007] "Automated System for Thermographic Testing of Gas Turbine Blades" by J. Zettner et al. on the occasion of the DGZfP Annual Meeting 2003 [0007]
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009039224.6A DE102009039224B4 (en) | 2009-08-28 | 2009-08-28 | Method and device for detecting clogged holes in a component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009039224.6A DE102009039224B4 (en) | 2009-08-28 | 2009-08-28 | Method and device for detecting clogged holes in a component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE102009039224A1 true DE102009039224A1 (en) | 2011-03-03 |
| DE102009039224B4 DE102009039224B4 (en) | 2022-10-06 |
Family
ID=43525092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE102009039224.6A Active DE102009039224B4 (en) | 2009-08-28 | 2009-08-28 | Method and device for detecting clogged holes in a component |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE102009039224B4 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2547995A4 (en) * | 2010-03-17 | 2015-01-14 | Thermal Wave Imaging Inc | THERMOGRAPHIC DETECTION OF INTERNAL PASSAGE BLOCKAGES |
| DE102010047713B4 (en) * | 2009-10-12 | 2015-09-17 | BAM Bundesanstalt für Materialforschung und -prüfung | Measuring arrangement and method for the quantitative detection of spatial distributions of gas flows |
| US10551327B2 (en) | 2018-04-11 | 2020-02-04 | General Electric Company | Cooling hole inspection system |
| US11492913B2 (en) | 2020-07-21 | 2022-11-08 | General Electric Company | Cooling hole inspection system |
| WO2023084958A1 (en) * | 2021-11-15 | 2023-05-19 | 三菱パワー株式会社 | Component inspection method, component manufacturing method, and component inspection device |
| US11885688B2 (en) | 2020-07-21 | 2024-01-30 | General Electric Company | Method and system for inspecting cooling holes of a turbine engine component |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3533186A1 (en) * | 1984-09-20 | 1986-03-27 | General Electric Co., Schenectady, N.Y. | COOLING HOLE TEST METHOD |
| DE10064269A1 (en) | 2000-12-22 | 2002-07-04 | Alstom Switzerland Ltd | Component of a turbomachine with an inspection opening |
| DE10248410A1 (en) | 2001-10-23 | 2003-05-22 | Alstom Switzerland Ltd | Device for filtering out particles from a flow |
| DE10252189A1 (en) | 2001-11-13 | 2003-05-22 | Alstom Switzerland Ltd | Device for dust and dirt separation in flowing media |
| US20070290134A1 (en) * | 2005-12-07 | 2007-12-20 | Meyer Tool, Inc. | Apparatus and Method for Analyzing Relative Outward Flow Characterizations of Fabricated Features |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5111046A (en) | 1991-03-18 | 1992-05-05 | General Electric Company | Apparatus and method for inspecting cooling holes |
| DE19720461A1 (en) | 1996-07-31 | 1998-02-05 | Siemens Ag | Method and device for checking the internal cooling structure of turbine blades, in particular stationary gas turbines |
-
2009
- 2009-08-28 DE DE102009039224.6A patent/DE102009039224B4/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3533186A1 (en) * | 1984-09-20 | 1986-03-27 | General Electric Co., Schenectady, N.Y. | COOLING HOLE TEST METHOD |
| US4644162A (en) | 1984-09-20 | 1987-02-17 | General Electric Company | Cooling hole inspection |
| DE10064269A1 (en) | 2000-12-22 | 2002-07-04 | Alstom Switzerland Ltd | Component of a turbomachine with an inspection opening |
| DE10248410A1 (en) | 2001-10-23 | 2003-05-22 | Alstom Switzerland Ltd | Device for filtering out particles from a flow |
| DE10252189A1 (en) | 2001-11-13 | 2003-05-22 | Alstom Switzerland Ltd | Device for dust and dirt separation in flowing media |
| US20070290134A1 (en) * | 2005-12-07 | 2007-12-20 | Meyer Tool, Inc. | Apparatus and Method for Analyzing Relative Outward Flow Characterizations of Fabricated Features |
Non-Patent Citations (1)
| Title |
|---|
| "Automatisiertes System zur thermographischen Prüfung von Gasturbinenschaufeln" von J. Zettner et al. anlässlich der DGZfP-Jahrestagung 2003 |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010047713B4 (en) * | 2009-10-12 | 2015-09-17 | BAM Bundesanstalt für Materialforschung und -prüfung | Measuring arrangement and method for the quantitative detection of spatial distributions of gas flows |
| EP2547995A4 (en) * | 2010-03-17 | 2015-01-14 | Thermal Wave Imaging Inc | THERMOGRAPHIC DETECTION OF INTERNAL PASSAGE BLOCKAGES |
| US10551327B2 (en) | 2018-04-11 | 2020-02-04 | General Electric Company | Cooling hole inspection system |
| US11492913B2 (en) | 2020-07-21 | 2022-11-08 | General Electric Company | Cooling hole inspection system |
| US11885688B2 (en) | 2020-07-21 | 2024-01-30 | General Electric Company | Method and system for inspecting cooling holes of a turbine engine component |
| WO2023084958A1 (en) * | 2021-11-15 | 2023-05-19 | 三菱パワー株式会社 | Component inspection method, component manufacturing method, and component inspection device |
| JPWO2023084958A1 (en) * | 2021-11-15 | 2023-05-19 | ||
| JP7710527B2 (en) | 2021-11-15 | 2025-07-18 | 三菱重工業株式会社 | Component inspection method, component manufacturing method, and component inspection device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102009039224B4 (en) | 2022-10-06 |
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Owner name: MTU AERO ENGINES AG, DE Free format text: FORMER OWNER: MTU AERO ENGINES GMBH, 80995 MUENCHEN, DE Effective date: 20130807 |
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